64 Hood Hinge Bolts

[Alan D.]

Noticed the lower two bolts (3847758) on the hood hinge are different from the upper three (3846201) The repro are all the same, the lower longer ones (3847758).

The top three are shorter without the pointed end, however the head markings appear to be a large "G" with an "L" inside. Have not seen this mfg mentioned before. Yes the hood has been off a few times and one bolt is an "E" head which was cut short to look like the "G L" bolts. Are these "G L" bolts real for 1963-64 time??

Has anyone had problems using the longer 3847758 repro bolts - do they go through the hood??
Thanks

PS - in the past I believed the hinge was never painted, however the bolts appeared to be a black finish, but it was really paint. So I guess the hinge may have been painted and somebody just cleaned them really good. (not an AOS car)

[Joe R.]

Re: 64 Hood Hinge Bolts

Alan,

Never seen anything but "E" bolts on a 63 or 64 however I've not seen every 64 made so that's my escape!

The long bolts WILL go thru your hood or at least the ones I have seen are too long for the hood bolts. Believe they are reserved for the body (fenderwell) side of the hinge.

Long Island has some fine repos. Buy em and paint the whole thing black. Nobody will ever know you've been there.

JR

[Alan D.]

Re: 64 Hood Hinge Bolts

Thanks Joe,
Unless I findout otherwise I'll mill the lower longer ones (3847758) and turn them into the upper short 3846201's.

[Timothy B.]

Re: 64 Hood Hinge Bolts

Alan,

I have some of the L G bolts on my 63 and also some E bolts like above poster. The bolts that attach the hinge to inner fender are the same bolts that attach the splash shield to the inner fender behind the tire, they are also used on the hood catch to firewall. I believe they have captured serrated washer, pointed on end and are just slightly longer than repro's.

I may be incorrect but I believe the bolts used to attach the hinge to the hood are flat on the end with a captured smooth washer and shorter.

[Alan D.]

Re: 64 Hood Hinge Bolts

I like that report on the 63 use of the GL heads, will save some time.

Good find on the splash shield also being the 3847758, however these are both captured flat washers and mine are "E" heads at 1"
And yes the top (3) bolts, 3846201, are as you mention, see photo.

[Timothy B.]

Re: 64 Hood Hinge Bolts

The captured flat washer bolts 1" length may be the bolts that go from splash shield to outside fender as I think these are different than the splash shield to inner fender.

[Alan D.]

Re: 64 Hood Hinge Bolts

Tim,
Understand that 63 - E64 used the captured serrated washers and then they became just flat washers.

[Timothy B.]

Re: 64 Hood Hinge Bolts

Alan, I am not aware of a change between the years . I can only tell you what my 63 has installed and I believe they are correct.

[Alan D.]

Re: 64 Hood Hinge Bolts

Timothy,
Just wanted to confirm that yours were the correct ones.

From your earlier post: "I believe they have captured serrated washer," Then I mentioned mine were flat washers so just wanted to get back and confirm both are correct relative to car's year.
Thanks for all the help Alan

[Timothy B.]

Re: 64 Hood Hinge Bolts

Alan,

Sounds like the part #'s are different for 63. My AIM shows 3816170 for the splash shield and hood hinge to inner fender. These bolts are serrated and 1" long from point tip to inside serrated washer. My head marks are RBW and E.

The hood catch to firewall call out 3789670 and this screw is also serrated and approx 13/16 long measured like above. The head marking I thought was CL but I will post a picture for you to decide as batteries are dead, it almost looks like a half circle with the three grade five markings at 12-6 and 9 oclock.

The hood hinge to hood calls out 3795488 and I believe these have smooth washer and no pointed tip. I will take one out and get picture and measure also when batteries charge.

May be others with known original cars will post to be sure and I will also check my 67 assembly manual to see what the 67 part #'s are.

[Alan D.]

Re: 64 Hood Hinge Bolts

"Sounds like the part #'s are different for 63. My AIM shows 3816170 for the splash shield and hood hinge to inner fender. These bolts are serrated and 1" long from point tip to inside serrated washer. My head marks are RBW and E."

Screw 3816170 was changed to 3847758 by ECR 53935 on 7/8/63, ref is 64AIM section 11-13 sheet A3.00 (page D179)
My 3847758 are all pointed, "E", 1", plain washer.
& Same screw used for small splash shield. Most common heads seem to be the "E".

[Dan H.]

Re: 64 Hood Hinge Bolts

"Sounds like the part #'s are different for 63. My AIM shows 3816170 for the splash shield and hood hinge to inner fender. These bolts are serrated and 1" long from point tip to inside serrated washer. My head marks are RBW and E."

Screw 3816170 was changed to 3847758 by ECR 53935 on 7/8/63, ref is 64AIM section 11-13 sheet A3.00 (page D179)
My 3847758 are all pointed, "E", 1", plain washer.
& Same screw used for small splash shield. Most common heads seem to be the "E".

Hi Alan, checked my 64, seats all held in by '758' 'E' bolts with points, same with hood hinge to body, and small splash shields. Found a number of the 'shorter' 201 bolts, had all kinds of head markings: flying F, crossed L's, anchor, large 'C'. They're 3/4" vrs 1" for the '758' ones. These 'shorties' must be the ones for hood side of the hinge. I'll put them all back where they belong. Thanks for pointing this out. Had some long ones in there but they didn't hit the hood!
Dan

[Joe R.]

Re: 64 Hood Hinge Bolts

Just as a side bar. Part numbers have NOTHING to do with head markings. GM would spec out bolts, nuts, washers, fastners, etc to at least three manufacturers (sometimes as many as five). If they would meet the spec they would be ordered and stocked for certain years. The head marks are manufacturers marks just identifying manufacturer and grade.

It is very possible and did happen, especially with bumpers for one car of a specific year to recieve several bolts, nuts, washers etc. from different manufacturers. In other words one side of the line would have one manufacturers bolts, nuts, washers etc. and the other side of the line would have the same spected out bolts by another manufacturer.

TR's and WB's are a great example on 1964's. Early in the year many 1964 had TR's on one side and WB's on the other. Later in the year 1964 most were all WB's.

This must be a boring evening for an oratory like this. My apologies!

JR

[Dan H.]

Re: 64 Hood Hinge Bolts

Just as a side bar. Part numbers have NOTHING to do with head markings. GM would spec out bolts, nuts, washers, fastners, etc to at least three manufacturers (sometimes as many as five). If they would meet the spec they would be ordered and stocked for certain years. The head marks are manufacturers marks just identifying manufacturer and grade.

It is very possible and did happen, especially with bumpers for one car of a specific year to recieve several bolts, nuts, washers etc. from different manufacturers. In other words one side of the line would have one manufacturers bolts, nuts, washers etc. and the other side of the line would have the same spected out bolts by another manufacturer.

TR's and WB's are a great example on 1964's. Early in the year many 1964 had TR's on one side and WB's on the other. Later in the year 1964 most were all WB's.

This must be a boring evening for an oratory like this. My apologies!

JR

Totally agree Joe! My 6 bolts I located from several wrong positions that should be in the hinge to hood mode had 5 different mfr marks, must have been all dumped fron almost empty boxes into the 'ready' box. They just knew that someday it would drive some restorer nuts! My rocker panel bolts are original but are a mix of 'blank' and 'sems' head markings. Got dinged a point in Bend for non matching 14 bolts! Oh well, let the excitement continue!
Dan

[Timothy B.]

Re: 64 Hood Hinge Bolts

Alan, Pictures of the hood hinge to hood and hood hinge to inner fender bolts for my 63. The headmarking is LG on the hood bolts with 1/2" length and RBW on the inner fender bolts with 1" length.

The hood catch bolts are similar but are approx 13/16 in length and also have serrated washers.

I believe they are correct but I am not the original owner.